I am not very knowledgeable about using download sites, but it appears that my recent use of dropbox.com http://forums.silverfrost.com/viewtopic.php?t=2176 appears to work. It is early days in my use of this site and I am not aware of any problems with itís use.
This could be a way of including code or other attachments in posts in a more convenient way and if it does work as I understand then should be promoted for use on this forum.